68611131 has 10 divisors (see below), whose sum is σ = 102493292. Its totient is φ = 45740700.

The previous prime is 68611111. The next prime is 68611141. The reversal of 68611131 is 13111686.

It is not a de Polignac number, because 68611131 - 2¹⁰ = 68610107 is a prime.

It is a super-2 number, since 2×68611131² = 9414974594198322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68611095 and 68611104.

It is not an unprimeable number, because it can be changed into a prime (68611111) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 423445 + ... + 423606.

Almost surely, 2^68611131 is an apocalyptic number.

68611131 is a deficient number, since it is larger than the sum of its proper divisors (33882161).

68611131 is an equidigital number, since it uses as much as digits as its factorization.

68611131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847063 (or 847054 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 68611131 is about 8283.1836270845. The cubic root of 68611131 is about 409.3846231330.

The spelling of 68611131 in words is "sixty-eight million, six hundred eleven thousand, one hundred thirty-one".